Hook unit



FIG. 1 is an isometric projection view of a hook unit showing my new design.

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a right side elevational view thereof, at a slightly smaller scale than FIG. 2;

FIG. 5 is a left side elevational view thereof, at the same scale as FIG. 4.

FIG. 6 is a rear elevational view thereof, at the same scale as FIG. 2; and,

FIG. 7 is a bottom plan view thereof.

The broken line showing of hook supporting structure is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a hook unit, as shown and described. 